Wireless carriers are adding extras as they battle for customers, rather than lower prices

T-Mobile US Inc. said it would give customers free music and perks from Pandora Media Inc. and Live Nation Entertainment Inc., the latest in a string of sweeteners from carriers battling for customers without resorting to discounting.

The No. 3 wireless company in terms of subscribers said Wednesday it will give one year of Pandora Plus service to existing customers who sign up this month through its T-Mobile Tuesdays app. Subscribers were also promised special seating and other perks at events run by concert promoter Live...

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